CVE-2025-10066 is a cross-site scripting (XSS) vulnerability identified in version 1.0 of the itsourcecode POS Point of Sale System. The vulnerability exists in an unspecified function within the file /inventory/main/vendors/datatables/unit_testing/templates/dymanic_table.php. The issue arises from improper sanitization or validation of user-supplied input in the 'scripts' argument, which allows an attacker to inject malicious scripts. This vulnerability can be exploited remotely without requiring authentication, although it does require user interaction (e.g., a user visiting a crafted page or interface) to trigger the malicious script execution. The CVSS 4.0 base score is 5.3, indicating a medium severity level. The attack vector is network-based with low attack complexity and no privileges required. The impact primarily affects the confidentiality and integrity of the user session or data, with limited impact on availability. The vulnerability does not involve scope or security requirements changes. Although no known exploits are currently observed in the wild, the exploit details have been publicly disclosed, increasing the risk of exploitation. Given the POS system context, successful exploitation could lead to session hijacking, theft of sensitive information, or manipulation of POS data, potentially impacting business operations and customer trust.

For European organizations using the itsourcecode POS Point of Sale System version 1.0, this vulnerability poses a tangible risk to the security of payment and inventory data. Exploitation could allow attackers to execute arbitrary scripts in the context of the POS system's web interface, potentially leading to theft of payment card data, unauthorized transactions, or manipulation of inventory records. This could result in financial losses, regulatory non-compliance (e.g., GDPR violations due to data breaches), reputational damage, and operational disruptions. Retailers and businesses relying on this POS system may face increased risk of targeted attacks, especially in sectors with high transaction volumes. The remote exploitability and lack of required privileges make it easier for attackers to attempt exploitation, particularly if the POS system interfaces are exposed to the internet or accessible within internal networks without adequate segmentation. The medium severity suggests that while the vulnerability is serious, it may not lead to full system compromise but still requires timely remediation to prevent escalation or chained attacks.

1. Immediate application of patches or updates from itsourcecode once available is critical; since no patch links are currently provided, organizations should monitor vendor communications closely. 2. Implement strict input validation and output encoding on all user-supplied inputs, especially in the affected PHP file and related components, to prevent script injection. 3. Employ web application firewalls (WAFs) with rules targeting XSS attack patterns to provide a temporary protective layer. 4. Restrict access to the POS system's web interfaces to trusted internal networks only, using network segmentation and access controls to reduce exposure. 5. Conduct security audits and code reviews focusing on input handling in the POS system to identify and remediate similar vulnerabilities. 6. Educate staff on recognizing phishing or social engineering attempts that could facilitate user interaction required for exploitation. 7. Monitor logs and network traffic for suspicious activities indicative of XSS exploitation attempts. 8. Consider deploying Content Security Policy (CSP) headers to limit the execution of unauthorized scripts within the POS web interface.